【作者】 迟崇巍；

【导师】 乔毅；

【作者基本信息】 大连交通大学 ， 控制理论与控制工程， 2010， 硕士

【摘要】 在机场、军事基地、发电厂、油库等一些重要的区域,为了防止非法的入侵和各种破坏活动,通常在这些区域的外围周界处设置一些屏障或阻挡物,安排人员加强巡逻。传统的防范手段采用人力防范往往受时间、地域、人员素质和精力等因素的影响,亦难免出现漏洞和失误,难以适应安全的需要。因此,安装应用先进的周界探测报警系统就成为一种必要措施。远程激光对射报警器激光对射报警系统,是继传感电缆,红外对射之后的第三代周界防范产品。由于激光具有单色性好,准直性好的特点,所以,它比传统方法以及红外对射的防范距离更远,效率更高,性能更稳定,抗干扰性更强。本论文主要完成了激光器的选型和激光接收电路的设计,调试了89C52单片机计时电路和CAN总线通信电路,并在此基础上做了70组人通过激光光栅实验,以及35组杂物下落穿越光栅实验,记录下三路激光的阻断时间。由于选择激光器的阻断时间作为判断依据,所以根据采集到的样本数据,本文选择基于PCA的模板匹配算法对已分类样品进行训练,利用样品到已知样本点的距离来决定是否报警。相对于同时阻断三路激光即报警的产品,这种设计无疑增强了对人通过事件的识别能力。本文在最后主要针对提高单片机的决策的可靠性提出了贝叶斯检验错误分类的方法,并利用实验数据进行理论分析。在算法分析的过程中,利用实验获得的数据,得到了人体腿部,腰部和胸部通过激光光栅的时间特征。而这三路激光的离地高度可根据地形进行调整,本文设计高度分别为40cm、80cm和120cm。本文的设计主要是基于机场安防领域,但是对于地域平整、广阔,防范要求较高的地区,同样具有很高的应用价值。更多还原

【Abstract】 At the airport, military bases, power plants, oil depots and other important areas, in order to prevent the illegal invasion and sabotage activities, people usually set some boundaries or barriers blocking things in the periphery of these areas week, and lay persons to strengthen patrols. The traditional means of prevention are often used by the human against time, geographical, personnel quality and energy and other factors, there would inevitably be gaps and errors, difficult to adapt to the need for security. Therefore, the installation of the application of advanced perimeter detection system has become a necessary measure. Remote laser alarm system, following the sensing cable, infrared shooting system, is the third generation of products. As the laser is monochromatic good, and good collimation, so, than traditional methods, as well as with infrared preventive farther, more efficient, more stable, stronger anti-interference.This thesis completed the selection of the laser and the laser receiver circuit and commissioning of the 89C52 microcontroller timing circuit and CAN bus communication circuit. On the basis of them, this paper did 70 groups of people passing laser grating experiment, and debris falling through the grating of 35 experimental groups, recorded the three-way laser blocking time. Because of the selection of time based on blocking laser as a judge, according to the data collected, this paper chose the algorithm which is based on PCA of the template matching for training samples that have been classified. Using the distance of sample to a known sample points to determine whether the alarm to be done. Relative to the same laser that is blocking the three-way alarm products, this design will undoubtedly enhance the capacity of recognition of the event of human passing through. At the latter part of this paper made the classification method of Bayesian error test for improving the reliability of decision-making of microcontroller, and theoretical analysis of experimental data.In the process of algorithm analysis, the use of experimental data obtained the time characteristics of the laser grating by the human leg, waist and chest. This three-way height of the laser can be adjusted according to the terrain, the paper design height were 40cm,80cm and 120cm.This design is mainly based on the Airport Security field, but for geographical formation, vast areas of prevention demanding the same high value.更多还原